Home / 9,989,457.44-13,785,451.28-5,405,778.81

Finding the Fourth Proportional to 9,989,457.44, 13,785,451.28 and 5,405,778.81

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Solution

The fourth proportional to 9,989,457.44, 13,785,451.28 and 5,405,778.81 is: 7,459,974.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989,457.44 : 13,785,451.28 = 5,405,778.81 : x
  2. Step 2: Convert to fraction form
    9,989,457.44/13,785,451.28 = 5,405,778.81/x
  3. Step 3: Cross multiply
    9,989,457.44x = 13,785,451.28 × 5,405,778.81
  4. Step 4: Simplify right side
    9,989,457.44x = 74,521,100,388,682.48
  5. Step 5: Solve for x
    x = 74,521,100,388,682.48/9,989,457.44
  6. Step 6: Final answer
    x = 7,459,974.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.